diff --git a/web/views/@default/servers/components/cache/update.html b/web/views/@default/servers/components/cache/update.html
index 7084009a..6d6f4019 100644
--- a/web/views/@default/servers/components/cache/update.html
+++ b/web/views/@default/servers/components/cache/update.html
@@ -12,7 +12,7 @@
 			<tr>
 				<td class="color-border">缓存类型 *</td>
 				<td>
-					<select class="ui dropdown auto-width" name="type" v-model="policyType">
+					<select class="ui dropdown auto-width" name="type" v-model="policyType" @change="changePolicyType">
 						<option v-for="type in types" :value="type.type">{{type.name}}</option>
 					</select>
 				</td>
diff --git a/web/views/@default/servers/components/cache/update.js b/web/views/@default/servers/components/cache/update.js
index c4b6494f..8ba862cf 100644
--- a/web/views/@default/servers/components/cache/update.js
+++ b/web/views/@default/servers/components/cache/update.js
@@ -7,4 +7,20 @@ Tea.context(function () {
 	if (this.cachePolicy.type == "file" && this.cachePolicy.options.openFileCache != null && this.cachePolicy.options.openFileCache.isOn && this.cachePolicy.options.openFileCache.max > 0) {
 		this.fileOpenFileCacheMax = this.cachePolicy.options.openFileCache.max
 	}
+
+	this.changePolicyType = function () {
+		if (this.policyType == "file") {
+			let options = this.cachePolicy.options
+			if (options != null && typeof options == "object" && typeof options["dir"] === "undefined") {
+				options["enableMMAP"] = true
+				options["dir"] = "/opt/cache"
+				options["memoryPolicy"] = {
+					capacity: {
+						unit: "gb",
+						count: 2
+					}
+				}
+			}
+		}
+	}
 })
\ No newline at end of file